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var(--ink);border-radius:var(--radius);cursor:pointer;transition:background var(--flip) var(--ease),color var(--flip) var(--ease),border-color var(--flip) var(--ease),outline-color var(--transition)}.bitcell:after{content:"";position:absolute;top:2px;right:2px;bottom:2px;left:2px;border:1px solid transparent;border-radius:1px;pointer-events:none}.bitcell.is-flipped.is-one:after{animation:bit-ring var(--flip) var(--ease)}.bitcell.is-flipped.is-zero:after{animation:bit-ring-out var(--flip) var(--ease)}@keyframes bit-ring{0%{border-color:#fff;top:2px;right:2px;bottom:2px;left:2px}to{border-color:transparent;top:6px;right:6px;bottom:6px;left:6px}}@keyframes 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var(--ease)}.bitgrid__row.is-sliding-right{animation:row-slide-right var(--slide) var(--ease)}@keyframes row-slide-left{0%{transform:translate(calc(var(--cell) + var(--cell-gap)))}to{transform:translate(0)}}@keyframes row-slide-right{0%{transform:translate(calc(-1 * (var(--cell) + var(--cell-gap))))}to{transform:translate(0)}}.changed{display:inline;border-bottom:2px solid transparent}.changed.is-changed{animation:digit-underline var(--readout) var(--ease)}@keyframes digit-underline{0%{border-bottom-color:var(--yellow)}to{border-bottom-color:transparent}}.statsstrip{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;border-top:1.5px solid var(--ink);padding-top:20px}.statcard{display:flex;flex-direction:column;gap:6px;border:var(--border);border-radius:var(--radius);padding:12px 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var(--tag-gap))}.op-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;font-family:var(--mono);font-size:14px;font-weight:600;background:var(--paper);color:var(--ink);border:var(--border);border-radius:var(--radius);padding:8px 14px;cursor:pointer;transition:background var(--transition),color var(--transition)}.op-select:hover:not(.is-active){background:var(--off)}.op-select.is-active{background:var(--ink);color:var(--paper)}.op-select:focus-visible{outline:2px solid var(--yellow);outline-offset:-2px}.result-meta{display:flex;flex-direction:column;gap:14px}.result-flags{display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 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0}.practice__status.is-won{font-weight:700;color:var(--paper);background:var(--blue);border-color:var(--blue);padding-left:12px}.practice__moves{display:flex;flex-wrap:wrap;gap:8px}.practice__moves .op-btn:disabled{color:var(--muted);border-color:var(--muted);cursor:default}.practice__moves .op-btn:disabled:hover{background:var(--paper);color:var(--muted)}.movelog{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}.movelog__item{display:flex;align-items:baseline;gap:7px;font-family:var(--mono);font-size:12px;border:1.5px solid var(--off);border-radius:var(--radius);padding:5px 8px}.movelog__n{color:var(--muted);font-size:10px}.movelog__move{font-weight:700;color:var(--ink)}.movelog__result{color:var(--blue)}.fieldpanel{display:flex;flex-direction:column;gap:20px}.fieldpanel__editor{display:flex;flex-wrap:wrap;gap:18px 28px;align-items:flex-start}.fieldpanel__editor .repfield{flex:1 1 320px}.fieldpanel__text{font-family:var(--mono);font-size:14px;line-height:1.5;color:var(--ink);background:var(--paper);border:var(--border);border-radius:var(--radius);padding:10px;resize:vertical;min-height:90px}.fieldpanel__text:focus{outline:2px solid var(--yellow);outline-offset:-2px}.fieldpanel__hint{font-family:var(--sans);font-size:12px;color:var(--muted);margin:6px 0 0;line-height:1.5}.fieldpanel__errors{flex:1 1 260px;list-style:none;margin:0;border-left:3px solid var(--red);padding:0 0 0 12px}.fieldpanel__error{font-family:var(--mono);font-size:12px;line-height:1.6;color:var(--red)}.bitspan--field{border-bottom:2px solid var(--blue)}.fieldtable{border-collapse:collapse;width:100%;font-family:var(--mono);font-size:13px}.fieldtable th,.fieldtable td{text-align:left;padding:8px 12px 8px 0;border-bottom:1.5px solid var(--off)}.fieldtable thead th{font-family:var(--sans);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);border-bottom:1.5px solid var(--ink)}.fieldtable tbody th{font-weight:700;color:var(--ink)}.fieldtable tbody td{color:var(--ink)}.fieldpanel__foot{display:flex;align-items:center;gap:10px}.fieldpanel__word{font-family:var(--mono);font-size:16px;color:var(--ink)}.fieldpanel__foot .copy-btn{border:var(--border);border-radius:var(--radius);padding:4px 6px}.fixedpanel{display:flex;flex-direction:column;gap:20px}.fixedpanel__controls{display:flex;flex-wrap:wrap;align-items:flex-end;gap:18px 24px}.fixedpanel__controls .repfield{flex:0 1 240px}.qselect{-webkit-appearance:none;-moz-appearance:none;appearance:none;font-family:var(--mono);font-size:14px;color:var(--ink);background:var(--paper);border:var(--border);border-radius:var(--radius);padding:8px 12px;cursor:pointer}.qselect:focus-visible{outline:2px solid var(--yellow);outline-offset:-2px}.fixedpanel__readouts{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:4px 24px}.fixedpanel__note{font-family:var(--sans);font-size:14px;line-height:1.6;border-left:3px solid var(--yellow);padding-left:14px}.bitspan--fraction{border-bottom:2px solid var(--blue)}.bitcell-wrap.is-point{position:relative}.bitcell-wrap.is-point:after{content:"";position:absolute;top:-3px;right:calc(var(--cell-gap) / -2 - 1.5px);height:calc(var(--cell) + 6px);width:3px;background:var(--ink)}.floatpanel{display:flex;flex-direction:column;gap:20px}.floatpanel__entry .repfield{max-width:420px}.floatpanel__error{font-family:var(--mono);font-size:12px;color:var(--red);margin:2px 0 0}.bitspan--exponent{border-bottom:2px solid var(--yellow)}.bitspan--sign{border-color:var(--red)}.floatpanel__class{display:flex;flex-wrap:wrap;align-items:center;gap:12px;border-top:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);padding:12px 0}.floatclass{font-family:var(--mono);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--paper);background:var(--ink);border-radius:var(--radius);padding:5px 10px}.floatclass--infinity,.floatclass--quiet,.floatclass--signalling{background:var(--red)}.floatclass--denormal{background:var(--blue)}.floatpanel__hex{font-family:var(--mono);font-size:16px;color:var(--ink)}.floatpanel__readouts{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:4px 24px}.floatline{display:flex;align-items:baseline;gap:10px;padding:7px 0;border-bottom:1.5px solid var(--off)}.floatline__label{font-family:var(--sans);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);flex:0 0 132px}.floatline__value{font-family:var(--sans);font-size:13px;color:var(--ink);min-width:0;overflow-wrap:anywhere}.floatline__value.is-mono{font-family:var(--mono)}.floatpanel__nearest{border-left:3px solid var(--yellow);padding-left:14px}.floatpanel__nearest-line{font-family:var(--sans);font-size:14px;line-height:1.6;margin:0 0 6px}.floatpanel__nearest-exact{font-family:var(--mono);font-size:14px;color:var(--ink);margin:0 0 6px;overflow-wrap:anywhere}.floatpanel__math{font-family:var(--mono);font-weight:700}.history{display:flex;flex-direction:column;gap:10px;border-top:1.5px solid var(--ink);padding-top:16px}.history__head{display:flex;align-items:baseline;gap:12px}.history__label{font-family:var(--sans);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.history__hint{font-family:var(--mono);font-size:11px;color:var(--muted)}.history__list{display:flex;gap:8px;list-style:none;margin:0;padding:0 0 4px;overflow-x:auto}.historyitem{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:flex;flex-direction:column;align-items:flex-start;gap:5px;background:var(--paper);color:var(--ink);border:1.5px solid var(--muted);border-radius:var(--radius);padding:7px 8px;cursor:pointer;white-space:nowrap;transition:border-color var(--transition),background var(--transition)}.historyitem:hover{border-color:var(--ink)}.historyitem.is-active{border-color:var(--ink);border-width:2px;padding:6px 7px}.historyitem:focus-visible{outline:2px solid var(--yellow);outline-offset:-2px}.historyitem__label{font-family:var(--sans);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.historyitem__value{font-family:var(--mono);font-size:12px;color:var(--ink)}.minigrid{display:flex;align-items:center;gap:1px}.minicell{display:block;width:5px;height:10px;background:var(--off)}.minicell.is-one{background:var(--blue)}.minigrid__more{font-family:var(--mono);font-size:9px;color:var(--muted);margin-left:3px}.negate{display:flex;flex-direction:column;gap:14px;border-top:1.5px solid 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